hugoWebsite/node_modules/rxjs/dist/cjs/internal/operators/groupBy.js

67 lines
3.2 KiB
JavaScript
Raw Normal View History

2022-10-29 00:20:35 +02:00
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.groupBy = void 0;
var Observable_1 = require("../Observable");
var innerFrom_1 = require("../observable/innerFrom");
var Subject_1 = require("../Subject");
var lift_1 = require("../util/lift");
var OperatorSubscriber_1 = require("./OperatorSubscriber");
function groupBy(keySelector, elementOrOptions, duration, connector) {
return lift_1.operate(function (source, subscriber) {
var element;
if (!elementOrOptions || typeof elementOrOptions === 'function') {
element = elementOrOptions;
}
else {
(duration = elementOrOptions.duration, element = elementOrOptions.element, connector = elementOrOptions.connector);
}
var groups = new Map();
var notify = function (cb) {
groups.forEach(cb);
cb(subscriber);
};
var handleError = function (err) { return notify(function (consumer) { return consumer.error(err); }); };
var activeGroups = 0;
var teardownAttempted = false;
var groupBySourceSubscriber = new OperatorSubscriber_1.OperatorSubscriber(subscriber, function (value) {
try {
var key_1 = keySelector(value);
var group_1 = groups.get(key_1);
if (!group_1) {
groups.set(key_1, (group_1 = connector ? connector() : new Subject_1.Subject()));
var grouped = createGroupedObservable(key_1, group_1);
subscriber.next(grouped);
if (duration) {
var durationSubscriber_1 = OperatorSubscriber_1.createOperatorSubscriber(group_1, function () {
group_1.complete();
durationSubscriber_1 === null || durationSubscriber_1 === void 0 ? void 0 : durationSubscriber_1.unsubscribe();
}, undefined, undefined, function () { return groups.delete(key_1); });
groupBySourceSubscriber.add(innerFrom_1.innerFrom(duration(grouped)).subscribe(durationSubscriber_1));
}
}
group_1.next(element ? element(value) : value);
}
catch (err) {
handleError(err);
}
}, function () { return notify(function (consumer) { return consumer.complete(); }); }, handleError, function () { return groups.clear(); }, function () {
teardownAttempted = true;
return activeGroups === 0;
});
source.subscribe(groupBySourceSubscriber);
function createGroupedObservable(key, groupSubject) {
var result = new Observable_1.Observable(function (groupSubscriber) {
activeGroups++;
var innerSub = groupSubject.subscribe(groupSubscriber);
return function () {
innerSub.unsubscribe();
--activeGroups === 0 && teardownAttempted && groupBySourceSubscriber.unsubscribe();
};
});
result.key = key;
return result;
}
});
}
exports.groupBy = groupBy;
//# sourceMappingURL=groupBy.js.map